參數(shù)資料
型號: μPD789187
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8 位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 51/146頁
文件大?。?/td> 630K
代理商: ΜPD789187
Preliminary Product Information
51
μ
PD789186, 789187, 789196, 789197
6.5
Clock Timer
6.5.1
Clock timer functions
The clock timer has the following functions.
Clock timer
Interval timer
The clock and interval timers can be used at the same time.
Figure 6-23 is a block diagram of the clock timer.
Figure 6-23. Clock Timer Block Diagram
f
X
/2
7
f
XT
f
W
f
W
2
4
f
W
2
5
f
W
2
6
f
W
2
7
f
W
2
8
f
W
2
9
Clear
9-bit prescaler
S
Clear
5-bit counter
INTWT
INTWTI
WTM7 WTM6 WTM5 WTM4 WTM1 WTM0
Clock timer mode
control register (WTM)
Internal bus
S
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